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The hot comb was an invention developed in France as a way for women with coarse curly hair to achieve a fine straight look traditionally modeled by historical Egyptian women. [44] However, it was Annie Malone who first patented this tool, while her protégé and former worker, Madam C. J. Walker, widened the teeth. [45]
Women inventors have been historically rare in some geographic regions. For example, in the UK, only 33 of 4090 patents (less than 1%) issued between 1617 and 1816 named a female inventor. [ 1 ] In the US, in 1954, only 1.5% of patents named a woman, compared with 10.9% in 2002. [ 1 ]
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
This is a historical list dealing with women scientists in the 20th century. During this time period, women working in scientific fields were rare. Women at this time faced barriers in higher education and often denied access to scientific institutions; in the Western world, the first-wave feminist movement began to break down many of these ...
Mar. 2—It may seem like a recent trend for more women to be entering STEM fields, but women have a long history of contributing to innovations in science, technology, engineering and mathematics.
November 3 – Launch of Sputnik 2, with a dog called Laika on board, the first animal sent into orbit. There is no technology available to return it to Earth. December 6 – The United States attempts launch of Vanguard TV3 which fails after just two seconds in the air.
Melvin Calvin, James Bassham, and Andrew Benson at the University of California, Berkeley, discover the Calvin cycle in photosynthesis. [3]Entomologist Willi Hennig publishes Grundzüge einer Theorie der phylogenetischen Systematik in East Germany, pioneering the study of cladistics.
The timeline of historic inventions is a chronological list of particularly significant technological inventions and their inventors, where known. [ a ] The dates in this article make frequent use of the units mya and kya , which refer to millions and thousands of years ago, respectively.